@article{Frohn2021,
  author    = {Julia Frohn},
  title     = {Troubled schools in troubled times: how COVID-19 affects educational inequalities and what measures can be taken},
  journal   = {European educational research journal},
  volume    = {20},
  number    = {5},
  pages     = {667 -- 683},
  doi       = {10.1177/14749041211020974},
  year      = {2021},
}